Non Heath Voltmeter info needed

[Gordon BAtey]

Help

I have a obtained a nice looking "Integrated Circuit Multimeter" which 
is in a blue case very similar to the Heath instrument blue of later years.

It is labeled Energy Concepts Inc. (Part Number 19600, s/n ??591)  
It has a unique to me feature in that the positive meter lead must be 
removed to deactivate the internal battery power supply.  There is a 
holder for a C cell which is marked + and -.  I believe this powers the
ohmeter.  

My question is does anyone have any info as to what operating battery 
was used and where does it connect.  The wires have apparently been 
pulled out.  I have found the remains of one wire that connects to the 
switch circuit.  I would like to obtain a copy of the circuit if one is
available.

Thanks for any assistance.  Gordon WA4FJC 
GPBATEY at compuserve.com

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